/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrTextureProxyCacheAccess_DEFINED
#define GrTextureProxyCacheAccess_DEFINED

#include "src/gpu/ganesh/GrTextureProxy.h"

/* *
 * This class allows GrResourceCache increased privileged access to GrTextureProxy objects.
 */
class GrTextureProxy::CacheAccess {
private:
    void setUniqueKey(GrProxyProvider *proxyProvider, const skgpu::UniqueKey &key)
    {
        fTextureProxy->setUniqueKey(proxyProvider, key);
    }

    void clearUniqueKey()
    {
        fTextureProxy->clearUniqueKey();
    }

    explicit CacheAccess(GrTextureProxy *textureProxy) : fTextureProxy(textureProxy) {}
    CacheAccess &operator = (const CacheAccess &) = delete;

    // No taking addresses of this type.
    const CacheAccess *operator&() const;
    CacheAccess *operator&();

    GrTextureProxy *fTextureProxy;

    friend class GrTextureProxy;  // to construct/copy this type.
    friend class GrProxyProvider; // to use this type
};

inline GrTextureProxy::CacheAccess GrTextureProxy::cacheAccess()
{
    return CacheAccess(this);
}

inline const GrTextureProxy::CacheAccess GrTextureProxy::cacheAccess() const
{ // NOLINT(readability-const-return-type)
    return CacheAccess(const_cast<GrTextureProxy *>(this));
}

#endif
